CN101325829B - Display apparatus and method of manufacturing the same - Google Patents
Display apparatus and method of manufacturing the same Download PDFInfo
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- CN101325829B CN101325829B CN2008101254620A CN200810125462A CN101325829B CN 101325829 B CN101325829 B CN 101325829B CN 2008101254620 A CN2008101254620 A CN 2008101254620A CN 200810125462 A CN200810125462 A CN 200810125462A CN 101325829 B CN101325829 B CN 101325829B
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Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/841—Self-supporting sealing arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/34—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies not provided for in groups H01L21/18, H10D48/04 and H10D48/07, with or without impurities, e.g. doping materials
- H01L21/46—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/428
- H01L21/461—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/428 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/469—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/428 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After-treatment of these layers
- H01L21/471—Inorganic layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
- H01L23/3157—Partial encapsulation or coating
- H01L23/3192—Multilayer coating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49866—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers characterised by the materials
- H01L23/49894—Materials of the insulating layers or coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/06—Polymers
- H01L2924/07—Polyamine or polyimide
- H01L2924/07025—Polyimide
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
A display apparatus has a driving panel including a circuit part, a coating layer, and a display part, provided sequentially over a driving substrate. The driving panel includes: an adhesion region which includes the circuit part, the coating layer and the display part and to which a seal panel is adhered through an adhesive layer therebetween; and a terminal region protruding from the seal panel and the adhesive layer. A plurality of metallic wires electrically connected to the circuit part in the adhesion region are extended into the terminal region, and the coating layer is provided in the adhesion region with at least one separated region between the plurality of metallic wires. The separated region of the coating layer is so formed that an end edge thereof lies beyond the adhesion region to reach the terminal region but not to reach an end edge of the terminal region.
Description
Technical field
The present invention relates to adopt for example display device and the manufacture method thereof of the display unit of organic light emitting apparatus.Particularly, the present invention relates to be suitable for being applied to the display device and the manufacture method thereof of so-called total solids hermetically-sealed construction, the driving panel and the sealing panel that provide display unit in so-called total solids hermetically-sealed construction are bonded to each other by the binder course between them.
Background technology
In recent years, adopted the oganic light-emitting display device of organic light emitting apparatus to cause people's attention as the display device that replaces LCD.Figure 22 and 23 illustrates the example of the structure of such oganic light-emitting display device.This display device has such structure, wherein drives panel 210 and sealing panel 220 toward each other, and is bonded to each other by the binder course between them 230.
Drive the display part 214 that panel 210 has circuit part 212, coating 213 and comprises a plurality of organic light emitting apparatus, they are formed on the driving substrate 211 that comprises glass etc. successively.Sealing panel 220 has the hermetic sealing substrate 221 that comprises glass etc.Between display part 214 1 sides and binder course 230 that drive panel 210, provide to comprise silicon nitride (SiN
X) or silicon dioxide (SiO
2) inorganic insulating membrane 240 that waits, so that with the big relatively gas shield in display part 214 (for example, referring to Japanese Patent Application Publication No.2005-38633).
Summary of the invention
In the such display device according to correlation technique, as shown in figure 23, in calmodulin binding domain CaM 200A, metal wiring 251 is coated with continuous coating 213.Because coating 213 comprises organic insulating material, it is easy to absorb water (moisture) and very low to the associativity of inorganic insulating membrane 240.Therefore, the boundary member between calmodulin binding domain CaM 200A and the terminal area 200B is easy to be subjected to the influence of water (moisture) under the environment of high water vapor pressure.Therefore, the inside of water and foreign ion infiltration by coating 213 or the interface by coating 213 and inorganic insulating membrane 250, and be created in the corrosion that potential difference between the metal wiring 251 causes metal wiring 251, cause opening circuit or short circuit.
The example of the galvano-cautery reason of metal wiring 251 comprises the ion exchange paths, water (moisture) of the ion of metal wiring constituent material etc. and because the electric field that the current potential between the adjacent metal distribution 251 produces.In correlation technique, with regard to the described example of the flat 11-142871 of Japanese Patent Application Publication No., the method of the current potential influence between the following minimizing adjacent wiring is provided, this current potential influence is one of reason of galvano-cautery, the distribution that this is arranged in parallel by setting order is set to minimize the potential difference between the adjacent wiring, virtual distribution or distribution are provided in addition.Yet in the display device according to correlation technique shown in Figure 24, water (moisture) and foreign ion can freely infiltrate zone between the metal wiring by coating 213, thereby also are difficult to elimination and corrode even the potential difference between the adjacent wiring is very little.
Therefore, need to suppress the metal wiring corrosion, and can improve the display device of reliability, and manufacture method.
In order to satisfy the demand, according to one embodiment of present invention, the display that is provided comprises the driving panel, and this driving panel comprises circuit part, coating that is provided at successively on the driving substrate and the display part with a plurality of display unit.In this display device, this driving panel comprises: calmodulin binding domain CaM, comprise circuit part, coating and display part, and sealing panel is attached on this calmodulin binding domain CaM by the binder course of centre; And the terminal area, outstanding from sealing panel and binder course.In this display device, the many strip metals distribution that is electrically connected to circuit part in calmodulin binding domain CaM extends into the terminal area, and coating is provided in the calmodulin binding domain CaM, and has at least one marker space between many strip metals distribution; And the marker space of coating forms the end edge that makes its marginal portion extend beyond calmodulin binding domain CaM incoming terminal zone and do not have the incoming terminal zone.
The present invention also provides the method for making display device, comprises following step: provide calmodulin binding domain CaM and terminal area on the driving panel, form circuit part in calmodulin binding domain CaM, and form many distributions that extend into the terminal area from circuit part; And forming the coating that covers circuit part makes its end edge not arrive the end edge of described terminal area.This method also comprises following step: for coating provides marker space between many distributions,, the end edge of the marker space of coating do not arrive the end edge of coating thereby extending beyond calmodulin binding domain CaM incoming terminal zone, form flat site thus between the end edge of the end edge of the marker space of coating and coating, the upper surface of its floating coat constitutes the flat surfaces in the terminal orientation; And form the display part on the coating in calmodulin binding domain CaM.This method also comprises following step: use the upside of masking tape seal coat in the terminal area, and flat surfaces is contacted each other fully with masking tape; The binder course of sealing panel by therebetween is attached to calmodulin binding domain CaM; And cut away sealing panel and binder course in the terminal area, and remove masking tape, to expose distribution thus.
According to one embodiment of present invention, the coating in the calmodulin binding domain CaM has the marker space between many strip metals distribution, thereby anti-sealing (moisture) and foreign ion are by the zone between the coating infiltration adjacent metal distribution.Therefore, the corrosion of metal wiring can be suppressed, and the reliability of display device can be significantly improved.And, because the end edge of the marker space of coating does not arrive the end edge of terminal area, so what can guarantee is, for example preventing that binder course from charging under the situation that the mode of terminal area covers, in the scope of the end edge of terminal area, can guarantee the flat site (full contact area) that is used to cover.Therefore, by the certainty that raising is covered, can prevent definitely that binder course from charging into the terminal area.As a result, can improve the reliability and the output of display device.
Description of drawings
In conjunction with the accompanying drawings, with reference to describing visible these and other target of the present invention, wherein:
Fig. 1 illustrates the plane graph of constructing usually according to the display device of first embodiment of the invention;
Fig. 2 is that display device cuts open the sectional view of getting along the II-II line among Fig. 1 as shown in Figure 1;
Fig. 3 is illustrated near the boundary member of display device as shown in Figure 1 a part to amplify the plane graph of form;
Fig. 4 cuts open the sectional view of getting along the IV-IV line among Fig. 3;
Fig. 5 is the sectional view that the example of display part shown in Figure 2 is shown;
Fig. 6 A to 6F is the sequence of steps figure that the method for display device shown in Figure 1 is made in diagram;
Fig. 7 is the sectional view that the display device structure of the modified example 1 according to the present invention is shown;
Fig. 8 is illustrated near the boundary member of display device as shown in Figure 7 a part to amplify the plane graph of form;
Fig. 9 is illustrated in according near the part the boundary member of the display device of invention modified example 2 to amplify the plane graph of form;
Figure 10 illustrates according near the part of display device boundary member of modified example 3 of the present invention to amplify the plane graph of form;
Figure 11 is the plane graph of another modified example that the display device of Fig. 2 is shown;
Figure 12 illustrates near the part of display device boundary member of the modified example 4 according to the present invention to amplify the plane graph of form;
Figure 13 illustrates according near the part of display device boundary member of second embodiment of the invention to amplify the plane graph of form;
Figure 14 illustrates according near the part of display device boundary member of third embodiment of the invention to amplify the plane graph of form;
Figure 15 shows the photo that shows embodiment of the invention result;
Figure 16 shows the photo that shows the comparative example result;
Figure 17 A and 17B are the sunken cord sectional views of cross section structure of marker space of diagram;
Figure 18 illustrates according near the part of display device boundary member of fourth embodiment of the invention to amplify the plane graph of form;
Figure 19 A to 19C is illustrated in the sectional view that near the end edge of wiring closet marker space resist residue produces summary;
Figure 20 A and 20B illustrate the example according to the plan view shape of the end edge of the marker space of sunkening cord in the display device of fifth embodiment of the invention;
Figure 21 A to 21C is the plane graph of diagram according to another example of the end edge shape of the marker space of sunkening cord in the display device of fifth embodiment of the invention;
Figure 22 is schematically illustrated plane graph of constructing according to the display device of correlation technique;
Figure 23 cuts open the sectional view of getting along XIX-XIX line among Figure 22; With
Figure 24 cuts open the sectional view of getting along XXI-XXI line among Figure 23.
Embodiment
Now, will describe embodiments of the invention in detail with reference to accompanying drawing below.In the accompanying drawings, element is so that the observer understands such shape of the present invention, size and the position relation illustrates, and their shown sizes also are different from actual size.
＜the first embodiment 〉
Fig. 1 illustrates the general structure according to the display device of first embodiment of the invention, cuts open the cross section structure of getting with the II-II line and Fig. 2 illustrates display device shown in Figure 1.For example, display device is a kind of adopted active or ultra-thin oganic light-emitting display device of passive that is driven by thin-film transistor (TFT), and have such structure, wherein drive panel 10 and sealing panel 20 toward each other, and be bonded to each other by the bond between them 30.
Drive the display parts 14 that panel 10 has circuit part 12, coating 13 and comprises a plurality of organic light emitting apparatus of describing after a while, they are formed on the driving substrate 11 that comprises such as the inorganic insulating material of glass successively.Driving between display part 14 1 sides and binder course 30 of panel 10, be provided with and comprise silicon nitride (SiN
X) or silicon dioxide (SiO
2) inorganic insulating membrane 40, with display part 14 with respect to big gas shield.
Fig. 3 shows a part of planar structure of the boundary member 10C between calmodulin binding domain CaM 10A and terminal area 10B, and Fig. 4 shows along the IV-IV line of Fig. 3 and cuts open the cross section structure of getting.Coating 13 has wiring closet marker space 13A, and each wiring closet marker space 13A is formed between the adjacent metal distribution 51.This corrosion that can guarantee the metal wiring 51 in the display device is restricted, and can significantly strengthen the reliability of display device.Incidentally, in Fig. 3, the zone that is formed with coating 13 is the shadow region.
Coating 13 preferred upper surface and the side surfaces that cover this many strip metals distribution 51.This makes can prevent metal wiring 51 short circuits or damage, for example because the caused short circuit of foreign matter or the damage of deposition on metal wiring 51 in manufacture process.
In addition, inorganic insulating membrane 40 preferably contacts with driving substrate 11 in the zone between many strip metals distribution 51.Reason is, because driving substrate 11 comprises inorganic material, all glass as mentioned above, so can strengthen the combination between inorganic insulating membrane 40 and driving substrate 11, and can prevent that sealing (moisture) or foreign ion penetrate into zone between metal wiring 51 by the boundary member 10C between calmodulin binding domain CaM 10A and terminal area 10B.
The width D of wiring closet marker space 13A or the size in metal wiring 51 orientations preferably are set at big as much as possible according to the distance between the adjacent wiring 51.In addition, the length L of wiring closet marker space 13A or wish to be set at big as much as possible along the size on metal wiring 51 directions.
In addition, wiring closet marker space 13A forms like this, the end edge of one side or its be positioned at terminal part 52 the outer peripheral edge side vertically on end edge, extend beyond calmodulin binding domain CaM 10A incoming terminal zone 10B, but do not have the end edge (outer peripheral edge) of incoming terminal zone 10B.If the end edge of wiring closet marker space 13A does not have the end edge of incoming terminal zone 10B, then can guarantee to be projected under the situation among the 10B of terminal area to avoid binder course 30 for example covering (masking), guarantee that the flat region (all contact zones) that is used to cover is in the scope of the end edge of terminal area 10B.Can guarantee that flat region (all contact zone) has guaranteed at the structure in the scope of the end edge of terminal area 10B, for example can expect the improvement of the adhesion of masking tape, cover by certain enhancing and can guarantee to prevent that binder course is outstanding enters in the terminal area, realize strengthening the reliability of display device, and improve production output.
Fig. 5 illustrates the example of the structure of display part 14.Display part 14 has organic light emitting apparatus 110R, organic light emitting apparatus 110G that produces green glow that produces ruddiness and the organic light emitting apparatus 110B that produces blue light, and they set gradually into matrix pattern generally.
Each organic light emitting apparatus 110R, 110G and 110B for example have first electrode 112 as anode, comprise the organic layer 113 of luminescent layer and as second electrode 114 of negative electrode, they stack gradually from driving substrate 11 1 sides.
The example that constitutes the material of hole transmission layer among the organic light emitting apparatus 110R comprises two-[(N-naphthyl)-N-phenyl] benzidines ((the bis[(N-naphthyl)-N-phenyl of α-NPD)] benzidine).The example that constitutes the luminescent layer material in organic light emitting apparatus 110R comprises 2,5-two-[4-[N-(4-anisyl)-N-cyanoethyl aniline]] styryl benzene-1,4-dintrile (BSB) (2,5-bis[4-[N-(4-methoxyphenyl)-N-phenylamino]] styrylbenzene-1,4-dicarbonitrile (BSB), and the example of the material of formation electron transfer layer comprises oxine aluminium network and thing (Alq in organic light emitting apparatus 110R
3) (8-quinolinol aluminum complex).
The example that constitutes the material of hole transmission layer in organic light emitting apparatus 110G comprises α-NPD, and the example of the material of formation luminescent layer comprises Alq in organic light emitting apparatus 110G
3Mixture with the coumarin 6 (C6) (Coumarin 6) of 1 percent by volume.
Display device as above for example can be made as follows.
Fig. 6 A to 6F illustrates the method for making display device by manufacturing step.At first, as shown in Figure 6A, the circuit part 12 that comprises drive circuit and peripheral circuit is formed on the driving substrate 11 that is formed by above-mentioned material, form the regional 10B1 from the plan that circuit part 12 extends to terminal area 10B by many strip metals distribution 51 that above-mentioned material forms with above-mentioned thickness, and terminal part 52 is arranged on the end of metal wiring 51.
Next, shown in Fig. 6 B, for example, above-mentioned material is for example by the spin coating method coating, and then exposure and development is with the coating 13 that forms above-mentioned thickness.Here, in exposure, partly removed in the coating 13 that the plan of calmodulin binding domain CaM 10A forms among the regional 10A1, to be arranged on adjacent metal distribution 51 (not shown in Fig. 6 B for each of wiring closet marker space 13A thus; Referring to Fig. 3 and 4) between.
Subsequently, shown in Fig. 6 C, display part 14 is formed on the coating 13.When forming display part 14, at first, the film of first electrode of being made up of above-mentioned material 112 is for example formed by direct current (DC) sputtering method, and for example passes through this film of photoetching process selective etch, is reservation shape with this film patterning.Then, the organic layer 113 and second electrode 114 be made up of above-mentioned material form successively by for example vapour deposition process, to form organic light emitting apparatus 110R, 110G and 110B as shown in Figure 5.In this way, formed driving panel 10.
Thereafter, shown in Fig. 6 D, the inorganic insulating membrane of being made up of above-mentioned material 40 is formed on the display part 14.
After forming driving panel 10, shown in Fig. 6 E, binder course 30 is formed on the inorganic insulating membrane 40., be provided with colored filter and by hermetic sealing substrate 21 that above-mentioned material form be prepared as sealing panel 20, and shown in Fig. 6 E, drive panel 10 and sealing panel 20 and be bonded to each other by the binder course between them 30 thereafter.
After driving panel 10 and sealing panel 20 and being bonded to each other, shown in Fig. 6 F, those parts that the plan that is arranged in terminal area 10B forms regional 10B1 sealing panel 20 and binder course 30 are cut off, remove inorganic insulating membrane 40 by for example etching then, with exposing metal distribution 51 and terminal part 52.At this moment, terminal area 10B and calmodulin binding domain CaM 10A have been formed.As a result, finish the display device shown in Fig. 1 to 5.
In display device, when applying predetermined voltage between first electrode 112 and second electrode 114, electric current is injected in the luminescent layer in the organic layer 113, and the compound of hole and electronics taken place, and causes luminous.Light takes out by second electrode 114, inorganic insulating membrane 40 and sealing panel 20.Here, coating 13 in calmodulin binding domain CaM 10A has the wiring closet marker space 13A between metal wiring 51, thereby anti-sealing (moisture) and foreign ion penetrate into zone between the adjacent metal distribution 51 by coating, have strengthened the reliability of display device thus.
Thereby, in the present embodiment, because the coating 13 in binder course 10A provides the 13A of the wiring closet marker space between adjacent metal distribution 51, enter into zone between the adjacent metal distribution 51 by coating 13 so can prevent sealing (moisture) and foreign ion.Therefore, can suppress the corrosion of metal wiring 51, thereby the serious problems of preventing such as the inefficacy of the pixel conducting that causes owing to the short circuit between the metal wiring 51, key property damage etc., and improve the reliability of display device significantly.
In addition, wiring closet marker space 13A can form by simple technology, the plane graph pattern when wherein only having changed coating 13 exposures.Therefore, can realize the display device of high reliability, and prevent owing to providing extra play to cause structure and manufacturing process to complicate, and not increase material cost etc.
Especially, because inorganic insulating membrane contacts with driving substrate 11 between many strip metals distribution 51, so the combination between the driving substrate 11 that can improve inorganic insulating membrane 40 and be made of the inorganic material such as glass, and anti-sealing (moisture) and foreign ion enter into zone between the metal wiring 51 by the boundary member 10C between binder course 10A and terminal area 10B.
Now, will the modified example 1 to 3 of first embodiment be described.Except the shape or layout change of coating 13 and wiring closet marker space 13A, the modified example 1 to 3 and first embodiment have identical construction.Display device in the modified example 1 to 3 can be made with the same mode of first embodiment, and the same among its operation and effect and first embodiment.Therefore, corresponding to those element among first embodiment in the above by representing as the identical reference number that uses above.
＜modified example 1 〉
Fig. 7 shows the cross section structure of the display device of modified example 1 according to the present invention, and Fig. 8 shows near the planar structure of the part of boundary member 10C.In this display device, coating 13 is arranged among the terminal area 10B of calmodulin binding domain CaM 10A and part.Wiring closet marker space 13A is arranged to extend beyond calmodulin binding domain CaM 10A and enters into terminal area 10B.In this modified example, after this has guaranteed in manufacture process to drive panel 10 and sealing panel 20 and is bonded to each other, form to be absorbed among the regional 10B1 in the plan of terminal area 10B with the step shown in Fig. 6 F and cut in sealing panel 20 and the binder course 30 and the deviation (dispersion) that produces.
＜modified example 2 〉
Fig. 9 shows near the planar structure of the part of display device borderline region 10C of the modified example 2 according to the present invention.This display device has such structure, and its floating coat 13 is provided with on whole calmodulin binding domain CaM 10A and terminal area 10B.Coating 13 is provided with the opening 13B corresponding to terminal part 52.By this modified example, also can obtain the effect same as above-mentioned modified example 1.
＜modified example 3 〉
Figure 10 shows near the planar structure of the part the boundary member 10C in the display device of the modified example 3 according to the present invention.In this display device, coating 13 parts are cut away, to be formed on the side upwardly extending intersection marker space 13C that metal wiring 51 is arranged, and intersect marker space 13C by this, display part 14 be formed on the part on the coating 13 and near metal wiring 51 is capped boundary member 10C part separated from one another.In this modified example, this guarantees to suppress reliably water (moisture) or foreign ion and penetrates into zone between near the boundary member 10C the metal wiring 51 by coating 13.
Incidentally, as shown in figure 10, coating 13 can provide the opening 13B corresponding to terminal part 52, and perhaps as shown in figure 11, coating 13 can only cover metal wiring 51 and not arrive terminal part 52.
＜modified example 4 〉
Figure 12 is illustrated near the planar structure of the part the boundary member 10C in the display device of the modified example 4 according to the present invention.In this display device, metal wiring 51 is crooked near boundary member 10C, and coating 13 also provides the wiring closet marker space 13A according to the curved shape of metal wiring 51.By this modified example, also can obtain the effect same as above-mentioned modified example 1.
＜the second embodiment 〉
Figure 13 is illustrated in the planar structure according near the part the boundary member 10C in the display device of second embodiment of the invention.Except the width D of wiring closet marker space 13A according to changing by the potential difference between the middle wiring closet marker space 13A metal wiring 51 adjacent one another are, this display device has the structure identical with second modified example.In addition, the manufacture method of the display device in the present embodiment, operation and effect and modified example 2 is identical.Therefore, the element corresponding to above-mentioned modified example 2 uses reference number same as described above to represent.
For example, under the situation that is provided with four strip metal distribution 51A, 51B, 51C and 51D, when the potential difference V1 between metal wiring 51A and 51B is minimum, can adopt such structure, wherein the distance D 1 between is zero, and wiring closet marker space 13A promptly is not set.This structure can improve the flatness of the coating 13 between the low metal wiring 51 of corrosion possibility.In addition, when the potential difference V2 between metal wiring 51B and 51C was not very big, the distance D 2 between them can be less.When the potential difference V3 between metal wiring 51C and 51D was very big, the distance D 3 between them can be expected to be set at very big.
Thereby in the present embodiment, the width D of wiring closet marker space 13A is according to changing by the potential difference between the middle wiring closet marker space 13A metal wiring adjacent one another are.Therefore, can keep corroding the flatness of the coating 13 between the low metal wiring of possibility 51.On the other hand, for the high metal wiring 51 of corrosion possibility, can guarantee to suppress the infiltration of water (moisture) or foreign ion.This causes further promoting the reliability of display device.
＜the three embodiment 〉
Figure 14 shows the planar structure according near the part the boundary member 10C in the display device of third embodiment of the invention.Except that many strip metals distribution 51 with respect to borderline region 10C 10B one side in terminal area covers with coating 13, this display device has and above-mentioned modified example 3 identical construction.This display device can be with manufacture method manufacturing same as described above.
In this display device, same method realized during the light emission can be implemented by first, and light extracts in sealing panel 20 1 sides.Here, because many strip metals distribution 51 is coated with coating 13 with respect to borderline region 10C on terminal area 10B one side, penetrate into calmodulin binding domain CaM 10A by coating 13 from boundary member 10C so can prevent sealing (moisture) and foreign ion.
Thereby, in the present embodiment, many strip metals distribution 51 is coated with coating 13 with respect to the boundary member 10C between terminal area 10B and the calmodulin binding domain CaM 10A on terminal area 10B one side, thereby can prevent that sealing (moisture) or foreign ion penetrate into calmodulin binding domain CaM 10A by coating 13 from boundary member 10C one side.Therefore, can suppress the corrosion of metal wiring 51, prevent the serious problems of damaging such as the inefficacy of pixel conducting and key property that cause because of the short circuit between the metal wiring 51 thus, and significantly improve the reliability of display device.
In addition, the concrete example of various details.
＜example 〉
Display device is made by the identical mode of top first embodiment.In the case, metal wiring 51 is formed by aluminium (Al), and coating 13 is formed by polyimides.It is identical with modified example shown in Figure 10 3 that the flat shape of coating 13 is set at, and each is arranged on wiring closet marker space 13A between the adjacent metal distribution 51, and by silicon nitride (SiN
X) inorganic insulating membrane 40 that constitutes and be arranged to contact with each other by the driving substrate 11 that glass constitutes.The width D of each wiring closet marker space 13A all is 10 μ m.Metal wiring 51 is observed in the operation 1000 hours under the heat of 40 ℃ and 95% humidity and damp condition of thus obtained display device then under light microscope.The result as shown in figure 15.
As comparative example of the present invention, this display device is made by the mode identical with present embodiment, except metal wiring in calmodulin binding domain CaM, be coated with continuous coated.Metal wiring 51 is observed in the also operation 1000 hours under the heat of 40 ℃ and 95% humidity and damp condition of display device in this comparative example then under light microscope.The result as shown in figure 16.
As from Figure 15 finding, according to this example, the corrosion of metal wiring 51 is very slight.On the other hand, in this comparative example, recognized that the corrosion of metal wiring is obviously being carried out.Specifically, when finding that coating 13 in calmodulin binding domain CaM 10A provides wiring closet marker space 13A between metal wiring 51, can suppress the corrosion of metal wiring 51.
＜the four embodiment 〉
Figure 17 A and 17B show the cross section structure of wiring closet marker space.
Described in first to the 3rd embodiment, the many strip metals distribution 51 in the display device is coated with coating 13 as above-mentioned.Should be noted in the discussion above that at this coating 13 is formed by the organic photosensitive material, and therefore allow water (moisture) (H
2O) pass through betwixt easily.
Therefore, for example shown in Figure 17 B, if metal wiring 51 only is coated with coating 13, then absorbs water (moisture) and enter into coating 13 and will cause ion-exchange reactions between the adjacent metal distribution 51, this can cause the corrosion of metal wiring 51.
Consider this point, shown in Figure 17 A, in above-mentioned first to the 3rd embodiment, each wiring closet marker space 13A is arranged between the metal wiring 51, so that interrupt the required approach of ion-exchange reactions, therefore prevents the generation of above-mentioned phenomenon.
On the other hand, in the display device of as above constructing, the upside of the driving panel 10 among the calmodulin binding domain CaM 10A is sealed by sealing panel 20 by the binder course 30 between them.Have in manufacturing under the situation of display device of this structure, common way is the upside that covers terminal area 10B, more particularly, cover the upside of the coating 13 among the 10B of terminal area with masking tape, so that prevent to constitute the thermosetting resin of binder course 30 or the side that the UV-cured resin flows out terminal area 10B.
Yet on coating 13, wiring closet marker space 13A is arranged to extend beyond calmodulin binding domain CaM 10A, with incoming terminal zone 10B.Therefore; in the zone that is provided with wiring closet marker space 13A; to and be used to protect binder course 30 and can produce the gap between the masking tape that adheres at the upper surface of coating 13, this thermosetting resin or UV-cured resin that may cause constituting binder course 13 penetrates this gap.
Especially, in recent years, tended to the more metal wiring 51 of narrow pitch, yet allowed width to have restriction the minimum of wiring closet marker space 13A.Therefore, on relevant basis, increased by the ratio that wiring closet marker space 13A occupies based on the upper surface of coating 13, the infiltration of thermosetting resin or UV-cured resin as a result becomes and takes place significantly.
Consider aforesaid situation, in the display device of present embodiment, each wiring closet marker space 13A forms and makes its end edge extend beyond calmodulin binding domain CaM 10A, reaching terminal area 10B, but does not reach the end edge of terminal area.
Figure 18 is near the plane graph of the amplification form of the part the boundary member 10C between calmodulin binding domain CaM 10A and the terminal area 10B in the display device that illustrates in the present embodiment.
As shown in the figure, driving on the panel 10, near the zone the one end thereof is divided into calmodulin binding domain CaM 10A and terminal area 10B, is boundary member 10C between them.In the 10B of terminal area, coating 13 is formed on boundary member 10C one side, but does not form coating 13 on the 10B end edge side of terminal area, and so exposed terminal part 52.In other words, the end edge position of coating 13 does not have the end edge of incoming terminal zone 10B, but is positioned at calmodulin binding domain CaM 10A one side with respect to terminal area 10B end edge.
In addition, the coating 13 that covers metal wiring 51 provides wiring closet marker space 13A, and each is formed on wiring closet marker space 13A between the adjacent metal distribution 51.Here should be noted that, each wiring closet marker space 13A forms like this, and its end edge portion extends beyond calmodulin binding domain CaM 10A with incoming terminal zone 10B, but does not have the end edge of incoming terminal zone 10B, more particularly, do not arrive the end edge position of coating 13.
This causes not forming the zone of wiring closet marker space 13A on coating 13A, promptly the upper surface of coating 13 constitutes the flat region 10D of flat surfaces in the terminal orientation, is determined between the end edge of wiring closet marker space 13A and coating 13.
In the display device of as above constructing, near the boundary member 10C between calmodulin binding domain CaM 10A and the terminal area 10B, the end edge portion of wiring closet marker space 13A does not arrive the end edge position of coating 13.Therefore, flowing out under the situation of terminal area 10B one side so that prevent the thermosetting resin or the UV cured resin that constitute binder course 30 on coating 13 in conjunction with masking tape, the plane domain 10D that determines between the end edge of the end edge of wiring closet marker space 13A and coating 13 allows the contact fully between flat site 10D and masking tape, has guaranteed the adhesion of masking tape thus.In other words, by determining to be suitable for thereon can to expect to improve the adhesion of masking tape in conjunction with the flat region 10D of masking tape.
Therefore, cover by guaranteeing, can positively prevent to constitute the thermosetting resin of binder course 30 or UV cured resin and flow out among the 10B of terminal area or infiltrate in the upper surface and the gap between the masking tape of coating 13.Thereby, impel reliability and the output of improving display device.
Incidentally, the position of the end edge of wiring closet marker space 13A does not limit especially, as long as it extends beyond calmodulin binding domain CaM 10A does not reach coating 13 to reach terminal area 10B end edge.Yet wiring closet marker space 13A wishes to form as follows.
Play the approach that cuts off ion-exchange reactions for wiring closet marker space 13, and therefore prevent metal wiring 51 corrosion, thereby the position that forms wiring closet marker space its end edge of 13A conforms to the end edge of calmodulin binding domain CaM 10A, and is promptly consistent with the position of boundary member 10C, just enough.Yet, be that if make the position of end edge of wiring closet marker space 13A consistent with the position of boundary member 10C, because the deviation in forming wiring closet marker space 13A, end edge portion may not arrive boundary member 10C what this should anticipate.Therefore, consider the deviation when forming wiring closet marker space 13A, the end edge portion of wiring closet marker space 13A wishes to form, and arrives terminal area 10B one side with the outstanding boundary member 10C of surpassing of scheduled volume (with predetermined surplus) corresponding to deviation at least.
In addition, about guaranteeing the adhesion of masking tape, when the zone of flat region 10D is big more, obtain good more result.Consider this point, in the scope that does not reduce the predetermined edge surplus, the position of the end edge of wiring closet marker space 13A is wished to be positioned as close to borderline region 10C and is provided with.
＜the five embodiment 〉
In the display device of describing in above-mentioned the 4th embodiment, the end edge of wiring closet marker space 13A does not arrive the end edge of coating 13, and has determined flat region 10D between them.
Yet, in this should be noted in the discussion above that in recent years, tend to the metal wiring 51 of narrow pitch, and the width of wiring closet marker space 13A trends towards also reducing thereupon.
Therefore, do not arrive in the end edge that coating 13 and wiring closet marker space 13A are configured to wiring closet marker space 13A under the situation of end edge of coating 13, resist residue can produce near the end edge of wiring closet marker space 13A.
Figure 19 A to 19C illustrates the overview that resist residue produces.
Shown in Figure 19 A, near the end edge of wiring closet marker space 13A, specifically, near the step between wiring closet marker space 13A and the coating 13, if step is precipitous, form resist film nearby on the then regional upper side and produce such problem, the thickness of its resist film can not be followed step, and the following feature deterioration of resist film thickness.Thereby it is poor to produce film thickness in some near zones between coating 13 1 sides and wiring closet marker space 13A one side.
Therefore, shown in Figure 19 B, resist film thickness is very thick so that produce unreacted portion owing to under-exposed near step when post-exposure, specifically, is created in the zone that the film thickness difference occurs.As a result, shown in Figure 19 C, produce resist residue.
Consider this point, in the display device of present embodiment, the flat shape of the end edge portion of wiring closet marker space 13A is constructed as follows.
Figure 20 A and 20B illustrate the example of the flat shape of wiring closet marker space 13A.
Flat shape in the end edge portion of wiring closet marker space 13A is under the situation of rectangle, promptly shown in Figure 20 B, by two right angles with make under the situation that their line segments connected to one another constitute, step between wiring closet marker space 13A and the coating 13 is precipitous, and thinks that resist residue is easy to generate.
In order to eliminate this problem, in the display device of present embodiment, shown in Figure 20 A, the plane graph of end edge portion structure is arranged to conical in shape, thereby the size of end is not more than the limit of resolution (resolution limit) when forming wiring closet marker space 13A.In other words, make the length (seeing the L among the figure) of the end sections be not more than the limit of resolution for being not less than certain value.This has guaranteed that the step between wiring closet marker space 13A and the coating 13 is not precipitous but inclination lenitively.As a result, when forming resist film, compare with the situation of structure among Figure 20 B, the following feature of resist film thickness is enhanced, thereby can suppress the generation of resist residue.
＜modified example 〉
Equally, should consider that resist residue is easy to form according to the influence of the flat shape of the end edge portion of wiring closet marker space 13A.For example, shown in Figure 20 B, if all drift angles that constitute the end edge portion of wiring closet marker space 13A are right angles, resist residue is easy to form in drift angle.If drift angle is the acute angle less than the right angle, the possibility that resist residue produces is also higher.
Consider this point, the flat shape of the end edge portion of wiring closet marker space 13A can be set as follows.
Figure 21 A to 21C illustrates other the example of flat shape of the end edge portion of wiring closet marker space 13A.
In the flat shape of the end edge portion of the wiring closet marker space 13A shown in Figure 21 A, all drift angles that constitute end edge portion are the obtuse angles greater than the right angle.The quantity of drift angle does not limit especially, as long as all drift angles are the obtuse angle.According to the end edge portion of the wiring closet marker space 13A that constitutes by this way, be that the situation of right angle or acute angle is compared with drift angle, can suppress the generation of resist residue.
In addition, in the flat shape of the end edge portion of the wiring closet marker space 13A shown in Figure 21 B, end edge portion forms widelyer than other parts.The width D 5 that is end edge portion is bigger than the width D 4 of other parts.In this case, all drift angles of formation end edge portion also all are the obtuse angles.Should be noted in the discussion above that at this drift angle quantity does not limit especially.To produce resist residue for the end edge portion that is suppressed at wiring closet marker space 13A very effective for the end edge of the wiring closet marker space 13A of Gou Chenging in this manner, though the pitch of metal wiring 51 trends towards diminishing and thereupon the width D 4 of wiring closet marker space 13A also trend towards diminishing.
The statement of " drift angle is the obtuse angle " comprises the connotation of the situation of drift angle when unintelligible as used herein.Specifically, even form with circle in the marginal portion of the wiring closet marker space 13A shown in Figure 21 C, and presenting of drift angle can not say so clearly, see on this natural instincts microcosmic and also can think to be equal to the situation that drift angle is rendered as the obtuse angle.Therefore, this situation also is regarded as pattern a kind of that drift angle is the obtuse angle.
Although the present invention has as above described shown embodiment (and example), the invention is not restricted to the embodiments described, and various modification is possible.For example, all be provided with at regular intervals although described many strip metals distribution 51 in the above-described embodiments, many strip metals distribution 51 also can be provided with different intervals.In the case, the width D of wiring closet marker space 13A can change according to the interval of metal wiring 51.
In addition, in the second above-mentioned embodiment, many strip metals distribution 51 can be by different being spaced, and the width D of wiring closet marker space 13A can change according to the interval and the potential difference between the metal wiring 51 of metal wiring 51.
In addition, for example, the formation condition of the material of each that describe in the foregoing description layer and the formation method of thickness or film and each layer be not limited to aforesaid those, and can adopt other material and thickness or other film formation method and condition.
In addition, although specifically described the structure of organic light emitting apparatus 110R, 110G, 110B in the above embodiments, there is no need to provide above-mentioned all layers, and other layer can be provided.
In addition, although described such situation in the above-described embodiments, wherein driving panel 10 and inorganic insulating membrane 40 and sealing panel 20 is bonded to each other by the binder course 30 that is formed between them on whole zone, but the present invention also may be used on such situation, wherein drive panel 10 and sealing panel 20 and only partly have binder course 30, for example, binder course only is formed on the periphery edge part that drives panel 10, and sealing panel 20 etc. is in conjunction with thereon situation.
In addition, the present invention not only may be used on adopting the display device of organic light emitting apparatus, and can be applied to the display device that adopts other display unit, for example inorganic EL device, liquid crystal indicator, electro-deposition (electrodeposition) type or electrochromism (electrochromic) type display unit etc.
Those skilled in the art should be understood that, in the scope of claim or its equivalent feature, according to design needs and other factors, can carry out various modifications, combination, part combination and replacement.
The present invention comprises Japanese patent application JP2007-170145 that submitted Japan Patent office on June 28th, 2007 and the theme of submitting the Japanese patent application JP2007-156535 of Japan Patent office on June 13rd, 2007, and its full content is quoted and is incorporated into this.
Claims (14)
1. display device comprises:
Drive panel, comprise circuit part, coating that is provided at successively on the driving substrate and display part with a plurality of display unit;
Wherein said driving panel comprises
Calmodulin binding domain CaM comprises described circuit part, described coating and described display part, and the binder course of hermetic sealing substrate by the centre be attached on the described calmodulin binding domain CaM, and
The terminal area, outstanding from described sealing panel and described binder course,
Many strip metals distribution is electrically connected to described circuit part at described calmodulin binding domain CaM, and extends into described terminal area, and described coating is provided in the described calmodulin binding domain CaM, and has at least one marker space between described many strip metals distribution, and
The described marker space of described coating forms and makes its end edge extend beyond described calmodulin binding domain CaM to arrive described terminal area, but does not arrive the end edge of described terminal area.
2. display device as claimed in claim 1,
Wherein said coating comprises organic material.
3. display device as claimed in claim 1,
Wherein said coating comprises light-sensitive material.
4. display device as claimed in claim 1,
Wherein said coating covers the upper surface and the side surface of described many strip metals distribution.
5. display device as claimed in claim 1,
Wherein inorganic insulating membrane is provided between display part one side and described binder course of described driving panel.
6. display device as claimed in claim 5,
Wherein said inorganic insulating membrane contacts with described driving substrate in the zone between described many strip metals distribution, and described driving substrate comprises the inorganic material that comprises glass.
7. display device as claimed in claim 1,
The width of the described marker space of wherein said coating depend on by the distance between the two strip metal distributions adjacent one another are of the marker space of described centre and potential difference the two one of.
8. display device as claimed in claim 1,
Wherein said display unit is an organic light emitting apparatus, described organic light emitting apparatus is constructed like this, wherein stack gradually first electrode, comprise the organic layer and second electrode of luminescent layer, and the light that produces in the described luminescent layer extracts in this second electrode, one side from described driving substrate one side.
9. display device as claimed in claim 1,
The end edge of wherein said coating is arranged on a side of described calmodulin binding domain CaM with respect to the end edge of described terminal area, and the described end edge of the described marker space of described coating does not arrive the end edge of described coating.
10. display device as claimed in claim 9,
Wherein flat site is guaranteed between the described end edge of the described end edge of the described marker space of described coating and described coating, is formed in flat surfaces in the terminal orientation at the upper surface of coating described in the described flat site.
11. display device as claimed in claim 9,
The end edge portion of the described marker space of wherein said coating forms the taper flat shape, thereby its tip dimensions is not more than the limit of resolution that forms described marker space.
12. display device as claimed in claim 9,
The end edge portion of the described marker space of wherein said coating has the flat shape that all drift angles all are the obtuse angles.
13. display device as claimed in claim 12,
The described end edge portion of the described marker space of wherein said coating forms wideer than other parts in plane graph.
14. a method of making display device comprises following step:
On the driving panel, provide calmodulin binding domain CaM and terminal area, in described calmodulin binding domain CaM, form circuit part, and form many distributions that extend into described terminal area from described circuit part;
Forming the coating that covers described circuit part makes its end edge not arrive the end edge of described terminal area;
For described coating is provided at marker space between described many distributions, thereby the end edge of the described marker space of described coating extends beyond described calmodulin binding domain CaM and arrives described terminal area, but do not arrive the end edge of described coating, between the described end edge of the described end edge of the described marker space of described coating and described coating, form flat site thus, be formed in flat surfaces in the terminal orientation at the upper surface of coating described in this flat site;
Form the display part on the described coating in described calmodulin binding domain CaM;
In described terminal area, cover the upside of described coating, and described flat surfaces is contacted each other fully with described masking tape with masking tape;
The binder course of sealing panel by the centre is attached to described calmodulin binding domain CaM; And
Cut away described sealing panel and described binder course in the described terminal area, and remove described masking tape, to expose described distribution thus.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007156535 | 2007-06-13 | ||
| JP156535/07 | 2007-06-13 | ||
| JP170145/07 | 2007-06-28 | ||
| JP2007170145A JP4424381B2 (en) | 2007-06-13 | 2007-06-28 | Display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101325829A CN101325829A (en) | 2008-12-17 |
| CN101325829B true CN101325829B (en) | 2010-12-08 |
Family
ID=40189089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101254620A Active CN101325829B (en) | 2007-06-13 | 2008-06-13 | Display apparatus and method of manufacturing the same |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4424381B2 (en) |
| KR (1) | KR101495155B1 (en) |
| CN (1) | CN101325829B (en) |
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| CN107895727B (en) * | 2017-12-01 | 2020-01-21 | 南京中电熊猫液晶显示科技有限公司 | Display substrate and manufacturing method thereof |
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| US7309269B2 (en) * | 2002-04-15 | 2007-12-18 | Semiconductor Energy Laboratory Co., Ltd. | Method of fabricating light-emitting device and apparatus for manufacturing light-emitting device |
| CN100517797C (en) * | 2002-10-17 | 2009-07-22 | 旭硝子株式会社 | Laminated body, substrate with wiring, organic EL display element, connection terminal of organic EL display element, and manufacturing method thereof |
| JP4255844B2 (en) * | 2003-02-24 | 2009-04-15 | ソニー株式会社 | Organic light-emitting display device and method for manufacturing the same |
| US8217396B2 (en) * | 2004-07-30 | 2012-07-10 | Semiconductor Energy Laboratory Co., Ltd. | Display device comprising electrode layer contacting wiring in the connection region and extending to pixel region |
| JP2006054111A (en) * | 2004-08-12 | 2006-02-23 | Sony Corp | Display device |
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